Effect of heat treatment on the hardness and wear resistance of electrodeposited Co-B alloy coatings
Cobalt-boride (Co-B) alloy coatings with different boron contents (7.31–15.33 at.% B) were electrodeposited onto an AISI 1018 steel electrode using dimethylamine borane (DMAB) as the boron source and then heat treated at various temperatures ranging from 200 to 500 °C for 60 min under air atmosphere...
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| Format: | Article |
| Language: | English |
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Elsevier
2019-01-01
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| Series: | Journal of Materials Research and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785417306816 |
| _version_ | 1818152184889475072 |
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| author | Alma Martínez-Hernández Alia Méndez-Albores Earving Arciga-Duran José G. Flores José J. Pérez-Bueno Yunny Meas Gabriel Trejo |
| author_facet | Alma Martínez-Hernández Alia Méndez-Albores Earving Arciga-Duran José G. Flores José J. Pérez-Bueno Yunny Meas Gabriel Trejo |
| author_sort | Alma Martínez-Hernández |
| collection | DOAJ |
| description | Cobalt-boride (Co-B) alloy coatings with different boron contents (7.31–15.33 at.% B) were electrodeposited onto an AISI 1018 steel electrode using dimethylamine borane (DMAB) as the boron source and then heat treated at various temperatures ranging from 200 to 500 °C for 60 min under air atmosphere. The composition and morphology of the coatings were analyzed using glow discharge spectroscopy (GDS), scanning electron microscopy (SEM) and X-ray diffraction (XRD). The tribological characteristics, such as the hardness, friction coefficient, and wear resistance, were also studied. The results showed that the boron content in the coatings increased as the concentration of DMAB in the electrolytic solution increased. Amorphous Co-B coatings with hardness values ranging from 700 to 820 HV, depending on the boron concentration in the coating, were obtained. When the coatings were heat treated over the temperature range of 200–400 °C, the hardness increased considerably and the wear volume decreased. The XRD patterns of the coatings revealed that the thermal treatment caused a structural change in the Co-B alloys, from an amorphous structure to a crystalline Co metal and a Co3B alloy. The maximum hardness (1280 HV) and the minimum coefficient of friction (0.08) were obtained when the Co-B coatings (15.16 at.% B) were thermally treated at 400 °C. Keywords: Cobalt-boron alloys, Electrodeposition, Hard coatings, Heat treatment, Microhardness, Wear resistance |
| first_indexed | 2024-12-11T13:50:42Z |
| format | Article |
| id | doaj.art-2159f320a3fb4a2ab2489e93bc01d637 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-11T13:50:42Z |
| publishDate | 2019-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-2159f320a3fb4a2ab2489e93bc01d6372022-12-22T01:04:17ZengElsevierJournal of Materials Research and Technology2238-78542019-01-0181960968Effect of heat treatment on the hardness and wear resistance of electrodeposited Co-B alloy coatingsAlma Martínez-Hernández0Alia Méndez-Albores1Earving Arciga-Duran2José G. Flores3José J. Pérez-Bueno4Yunny Meas5Gabriel Trejo6Laboratory of Composite Materials and Functional Coatings, Center for Research and Technological Development in Electrochemistry (CIDETEQ), Parque Tecnológico Sanfandila, Pedro Escobedo, A.P. 064, C.P. 76703, Querétaro, MexicoScience Institute-ICUAP Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria Puebla, 72530 Puebla, MexicoLaboratory of Composite Materials and Functional Coatings, Center for Research and Technological Development in Electrochemistry (CIDETEQ), Parque Tecnológico Sanfandila, Pedro Escobedo, A.P. 064, C.P. 76703, Querétaro, MexicoLaboratory of Composite Materials and Functional Coatings, Center for Research and Technological Development in Electrochemistry (CIDETEQ), Parque Tecnológico Sanfandila, Pedro Escobedo, A.P. 064, C.P. 76703, Querétaro, MexicoLaboratory of Composite Materials and Functional Coatings, Center for Research and Technological Development in Electrochemistry (CIDETEQ), Parque Tecnológico Sanfandila, Pedro Escobedo, A.P. 064, C.P. 76703, Querétaro, MexicoLaboratory of Composite Materials and Functional Coatings, Center for Research and Technological Development in Electrochemistry (CIDETEQ), Parque Tecnológico Sanfandila, Pedro Escobedo, A.P. 064, C.P. 76703, Querétaro, MexicoLaboratory of Composite Materials and Functional Coatings, Center for Research and Technological Development in Electrochemistry (CIDETEQ), Parque Tecnológico Sanfandila, Pedro Escobedo, A.P. 064, C.P. 76703, Querétaro, Mexico; Corresponding author.Cobalt-boride (Co-B) alloy coatings with different boron contents (7.31–15.33 at.% B) were electrodeposited onto an AISI 1018 steel electrode using dimethylamine borane (DMAB) as the boron source and then heat treated at various temperatures ranging from 200 to 500 °C for 60 min under air atmosphere. The composition and morphology of the coatings were analyzed using glow discharge spectroscopy (GDS), scanning electron microscopy (SEM) and X-ray diffraction (XRD). The tribological characteristics, such as the hardness, friction coefficient, and wear resistance, were also studied. The results showed that the boron content in the coatings increased as the concentration of DMAB in the electrolytic solution increased. Amorphous Co-B coatings with hardness values ranging from 700 to 820 HV, depending on the boron concentration in the coating, were obtained. When the coatings were heat treated over the temperature range of 200–400 °C, the hardness increased considerably and the wear volume decreased. The XRD patterns of the coatings revealed that the thermal treatment caused a structural change in the Co-B alloys, from an amorphous structure to a crystalline Co metal and a Co3B alloy. The maximum hardness (1280 HV) and the minimum coefficient of friction (0.08) were obtained when the Co-B coatings (15.16 at.% B) were thermally treated at 400 °C. Keywords: Cobalt-boron alloys, Electrodeposition, Hard coatings, Heat treatment, Microhardness, Wear resistancehttp://www.sciencedirect.com/science/article/pii/S2238785417306816 |
| spellingShingle | Alma Martínez-Hernández Alia Méndez-Albores Earving Arciga-Duran José G. Flores José J. Pérez-Bueno Yunny Meas Gabriel Trejo Effect of heat treatment on the hardness and wear resistance of electrodeposited Co-B alloy coatings Journal of Materials Research and Technology |
| title | Effect of heat treatment on the hardness and wear resistance of electrodeposited Co-B alloy coatings |
| title_full | Effect of heat treatment on the hardness and wear resistance of electrodeposited Co-B alloy coatings |
| title_fullStr | Effect of heat treatment on the hardness and wear resistance of electrodeposited Co-B alloy coatings |
| title_full_unstemmed | Effect of heat treatment on the hardness and wear resistance of electrodeposited Co-B alloy coatings |
| title_short | Effect of heat treatment on the hardness and wear resistance of electrodeposited Co-B alloy coatings |
| title_sort | effect of heat treatment on the hardness and wear resistance of electrodeposited co b alloy coatings |
| url | http://www.sciencedirect.com/science/article/pii/S2238785417306816 |
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